Hoisting machinery



Patented Apr. 19, 1887.

(No Model.)

- O W HUNT HOISTING MAGHINERY.

UNITED lSTATES PATENT OFFICl-jo CHARLES W. HUNT, OF VVEST NEW 'BRIGHTOIL NEW YORK.

HOISTING MACHINERY.

SPECIPICATION forming part of Letters Patent No. 361,418, ated April 19, 1887.

Application filed January 17, 1887. Serial No. 224,535. (No model.)

mond and State of New York, have invented 5 a new and useful 'Improvement in Hoisting Machinery, and the following is declared to be a description of the same.

In hoisting machinery such as heretofore employed by me, and described and shown in Letters Patent Nos. 170,442 and 282,640, an elevator-frame and swinging boom and a traveling sheave truck forA the bucket Were employed, and also a chock-block to limit the downward travel of the sheave-truck, and this chock-block was placed in position by an attendant going out upon the-boom and moved by hand, as required; but a party at the place of leading or discharging could not control the place of descent of the bucket.

The object of my present invention is to shift the chock-block upon the boom from the deok of the boat or other place of discharge or loading of merchandise, and thereby control the place of descent of the bucket.- I employ a rope or chain connected to the ebook-block, and said rope or chain passes around pulleys Vor Wheels at the upper and lower ends of the inclined boom. The shaft of the lower Wheel has upon it a worm-Wheel, which engages a Worm-pinion upon a horizontal shaft in bearings upon the inclined boom. At the onter end of this horizontal shaft is a pulley or Wheel, around which is an endless rope or chain depending to the vessel or place of discharge or leading of merchandise, where an attendant can operate said rope or ohain, and by the mechanism named shift the chock-block upon the inclined boom' and regulate the place of descent of the bucket.

In the drawings, Figure 1 is an elevation of a hoisting mechanism to which my improvement is connected. Fig. 2 is an elevation of my improved mechanism in larger size, and Fig. 8 is a partial plan of the same.

A represents the elevator frame-Work; B, the track; C, the car; D D',the inclined tracks or ways and booms; E, the coal-bucket, and F the boat. These parts are well known, and have been described inpatents heretofore description.

The inclined tracks or ways D may be at any angle of inclination desired, or they may be horizontal.

The chock-block a is employed to stop the sheave-truck b directly over the place where the bucket E With its load is to be raised or lowered, and said chook-block has heretofore been placed in position by an attendant and adj usted upon the booms as required from time to time. i

I [employ the Wheels c c', mounted in bearings upon the booms orinclined ways D. Upon the shaft of the Wheels c is a worm-Wheel, d, and at right anglesV to the shaft of the Wheels c is a horizontal shaft, g, secured in bearings f f upon the side of the inclined ways D at thelower end, and upon said shaft g is the worm e,meshing with the worm-Wheel d, and upon the outer end of said shaft q is the pulley or Wheel h, carrying the endless rope or chain ,which reaehes down to the deck of the boat F.

Upon the side of the chock-block a there is afastening device-such as the arm or eye 1aand connected therewith and passing around the Wheels c c' is the Chain-rope a'.

The shaft of the Wheel c, by preference, extends across the boom and receives a wheelon the other end, so that two endless chains may be used one at each side of the chock-block and connected to the same, a second Wheel, 0, (not shown) being used.

The adjustment of the chock-block a, and the consequent regulation ot' the place of descent of the bucket E Where desired,is accomplished by an attendant upon the boat F drawing on the endless Chain or rope fi, and by the Wheel h, shaft g, worm e, and worm-wheel d, moving the wheel c c', and chain or rope a', and so draw'ing the ebook-block up or down the inclined ways D, and these parts also serve to keep the chock-block in place.

My improved apparatus is specially useful where two narrow boats lie side by side along-\ a, of the Wheels c c', chain or rope a', Worm- IOO wheel d, Worm 8, shaft g, wheel h, and endless just the ohook-blocks upon the inolined ways, rope or chain fi. substantially as specified. substantially as set forth. ro

2. In ahoisting apparatus,thecombination, Signed by me this 6th day of January, A. With the inolined ways D and chock-block a, D. 1887.

5 ofaropeor Chain connected to the ebook-block, CHARLES W. HUNT.

and Wheels around which said Chain or rope l Witnesses: passes, and mechanisn1,substantia1ly as speci- HAROLD SERRELL,

fied, for moving the Wheels and chains to ad- WILLIAM G. Mo'rT. 

